Pipe-pattern.



H. SLADE.

PIPE PATTERN.

, Af-PLIOATION FILED SEPT,9,1903.

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PATENTEDMAY 2a, 1907. H. SLADE. I PIPE PATTERN. APlLIOATION FILEDBEPT.9.1903

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PATENTED MAY 28, 1907.

H. SLADB. PIPE PATTERN. APPLICATION FILED SEPT. 9.1903.

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HARRY SLADE, or WAKEFIELD, EN

SON LIMITED, OF WA GLAND, ASSIGNOR TO E. GREEN AND KEFIELD, ENGLAND.

PIPE-PATTERN,

Specification of Letters Patent.

Patented May 28, 1907'.

Application filed September 9,1903. Serial No. 172,451.

To all whom it may concern.-

Be it known that I, HARRY SLADE, a subject of the King of Great Britain,residing at Sandal, lVakefield, Yorks, England, have invented certainnew and useful Improvements in Pipe-Patterns, of which the follow: ingis a specification.

The object of this invention is improve ments connected with patternsfor casting pipes, so that each pipe when cast shall be of equal lengthand thickness, of proper shape and non-spongy at the ends.

The invention will be clearly understood from the following descriptionaided by the accompanying drawings in which Figure 1 is a sectionalelevation of the apparatus with the required parts in position whenmaking the mold ready for the core. Fig. 2 is a sectional elevation ofthe apparatus with the core and cake in position ready for casting. Fig.3 is a plan of the catch employed for determining the proper positionthe cake seating is to take. Fig. 4 is a plan of the cake.

The casing A is formed in halves bolted together by bolts connecting thelugs B as also other lugs (not shown) to form a tube, and is provided atits upper part with a bell shaped mouth 0 and at the bottom with ahinged shoe D; such casing being so made that the cast pipe may bereadily removed and the casing easily put together for a fresh casting.

A polished pattern E is made of the outer diameter of the pipe to becast and such pattern E is inserted in the casing A and centralized byhaving its bottom edge tapered to find a bearing in a tapered hole orrecess in the shoe D. When this pattern is placed in position the sand Fis rammed down between the pattern E and the casing A to the top abouthalfway up the mouth C so that all the space is filled up to that part,the pattern E being central, a polished ring G may then be placed aroundthe pattern E at the required position so that a collar may be formed onthe end of the pipe. The cake seating H is then dropped over the patternE to rest 011 the ring G and forces it down into the sand and such cakeseating is provided with columns I carrying at their upper part a catchJ which rests 011 the top of the pattern E and determines the positionof the cake seating H in the bell mouth C, so that each pipe is of thesame length. More sand is now rammed between the cake seating H and thebell mouth C so that a complete wall of sand is formed from one end ofthe casing A to the other. The catch J is now released and the pattern Edrawn through the cake seating H, and ring G and seating H are taken outwhereupon the mold is ready to receive the core K. The sand coated coreK which is also provided with a tapered bottom to fit the shoe D is thenplaced in position in the same manner as the pattern E and the dry sandcake L is placed on the dry sand core K and dropped into the mold torest 011 the flange in the sand F created by the core seating H thiscentralizing the core K in the mold.

To give extra support to the core K at the top of the mold the cake L ismade to fit all round the core.

The transverse openings E and K, in the pattern and core respectivelyare to receive a bar or other device to be grasped in withdrawing suchparts from the mold and castm The cake L is made with the outer sideedges tapered and recesses M are formed therein, these with the spacesurrounding the cake communicating by holes N formed radially in thecake at the center to a recess P formed in the cake and surrounding thecore K so that when molten metal is poured in, it will pass through theholes N and recess P down the outside of the core K direct down thespace between the core and the mold and fill same Without risk of uneventhickness, blow holes or the ends being spongy when set.

What I claim and desire to secure by Letters Patent is 1. Thecombination of cake seating former extends, columns on the cake seatingpattern, and a catch carried by and adjustable on the columns, engagingthe pipe pattern to determine the position of the cake seating patternin the mold, as set forth.

2. The combination of a cake seating pattern comprising a centrallyapertured frustoconical member, having a plurality of supports thereon,a plate adjustably carried by the supports, and a pipe pattern extendingthrough the frusto-conical member into engagement with the said plate,as set forth.

3. The combination of a casing having a flaring mouth at one end and aclosure at the other end, a pipe pattern positioned within a pipepattern, a

pattern through which the the casing and having one end exposed, a Intestimony whereof i have hereunto set frusto-conieal member fittingaround the exmy hands in presence of two subscribing Wit- I0 posed endoffthhe pipe pattern Within the fiow t nesses, in mouth 0 t e casing, suorts on the sai T 5 member, extending beyon d the end of the HARRTISLADE' pipe pattern, and a plate carried by the said Witnesses:frusto-oonieal member and resting on the end ALFRED STANLEY HoUeHToN, ofthe pipe pattern, as set forth. ROBERT WATSON.

